Quadro 5000 CUDA

Hi all (mainly to the Nvidia team!)
I have a Quadro 5000 on my workstation and I work with 3dsmax 2012.
When I set iRay as rendering engine a message (below in Hardware Resources panel) says: “No Supported CUDA Devices Detected.”
Do have I do activate some hided settings?
I spent $1700 and he has to worth it!

Please help me!